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IES is an innovative company at the forefront of the development and application of powerful software simulation tools and consulting services for architects, engineers and others involved in the design, development and management of truly sustainable buildings. IES’ mission is to advance the sustainability of the world’s buildings through the use of integrated building performance modelling technology which more intelligently and assuredly determines the measures required to mitigate climate change and conserve our natural resources for future generations.

IES Ltd. Questions

The IES Ltd. annual revenue was $71.1 million in 2026.

Don McLean is the Founder and CEO of IES Ltd..

289 people are employed at IES Ltd..

The NAICS codes for IES Ltd. are [513, 51121, 5112, 511210, 511, 51].

The SIC codes for IES Ltd. are [73, 737].

Top IES Ltd. Employees

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